They claim that an estimated 1 in 5 women is sexually assaulted at college. To put that in perspective:

Such an assault rate would represent a crime wave unprecedented in civilized history. By comparison, the 2012 rape rate in New Orleans and its immediately surrounding parishes was .0234 percent; the rate for all violent crimes in New Orleans in 2012 was .48 percent.

http://www.city-journal.org/2014/eon0209hm.html